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  • Secure SMTP (SSL) Problems.

    I'm setting up a front end 2003 (sp1) server that requires SMTP conenctions to use SSL and secure logons. For most users this seems to be working well, but for a number of users they recieve the following message:

    The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[email protected]'. Subject '', Account: 'mailex.computing.uni.ac.uk', Server: 'smtp.computing.uni.ac.uk', Protocol: SMTP, Server Response: '454 5.7.3 Client does not have permission to Send As this sender.', Port: 25, Secure(SSL): Yes, Server Error: 454, Error Number: 0x800CCC78
    I think this may be related to the transfer of accounts from the old NT/5.5 mailsetup. New users have no problem sending messages, but it looks like older accounts do. I can see no difference between the old users and the new users.

    The above user has a email account [email protected] in the active directory and it's his primary account.

    Any pointers why the server would think that the client does not have permission to send as this sender ?

    Many thanks
    Andy C

  • #2
    Re: Secure SMTP (SSL) Problems.

    Almost certainly this is down to permissions.
    I would compare the permissions between a working user and non working user. Look at both the Mailbox Permissions and the permissions on the security tab.

    Simon.
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    • #3
      Re: Secure SMTP (SSL) Problems.

      Originally posted by Sembee View Post
      Almost certainly this is down to permissions.
      I would compare the permissions between a working user and non working user. Look at both the Mailbox Permissions and the permissions on the security tab.

      Simon.
      Many thanks

      Looks like this is the correct answer. On the security tab (active directory users and comuters, properties for the user) the SELF user name didn't have the Allow permission ticked for "Send As".

      I guess I need to find a way to check this permission for all users in the AD !

      Andy

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